This list of current longest ruling non-royal national leaders is a list of the 50 current longest ruling heads of nation-states or national governments, who are not royalty, sorted by length of tenure.

The individuals on the list were not necessarily the most powerful figure in their country's national government throughout the listed timespan. Some of them have held more than one national leadership level office: presidency, prime ministership, or some other title implying or widely believed to confer national leadership. When more than one such office exists in a country, there may be uncertainty as to which member of the national government actually has the greatest power. This list combines all national leader level offices held concurrently or consecutively by each individual.

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